To find out if a processor (CPU) on a Linux system is 64-bit or 32-bit, you can use the lscpu command. The lscpu command displays detailed information about the CPU, including the architecture and number of bits.
Here's the basic syntax for the lscpu command:
lscpu
To view the architecture and number of bits of the CPU, you can use the -p option to show the CPU model name and -b option to show the architecture and number of bits:
lscpu -p -b
This will display the CPU model name, architecture, and number of bits.
For example, the output of the lscpu -p -b command on a system with a 64-bit CPU might look something like this:
Model name: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 8 On-line CPU(s) list: 0-7 Thread(s) per core: 2 Core(s) per socket: 4 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 60 Stepping: 3 CPU MHz: 3405.000 BogoMIPS: 6800.00 Hypervisor vendor: KVM Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 8192K NUMA node0 CPU(s): 0-7
In this example, the Architecture field shows that the CPU is a 64-bit processor (x86_64). The CPU op-mode(s) field shows that the CPU can operate in both 32-bit and 64-bit modes.
You can also use the uname command to find out if the CPU is 64-bit or 32-bit. The uname command displays information about the Linux kernel and the system hardware, including the machine hardware name.
uname -m
This will display the machine hardware name, which indicates the architecture of the CPU. For example, if the machine hardware name is x86_64, it indicates that the CPU is a 64-bit processor.
Overall, the lscpu and uname commands are useful tools for finding out if a CPU is 64-bit or 32-bit on a Linux system. By using these commands, you can easily determine the architecture and number of bits of the CPU.